functions_old
=============

.. py:module:: functions_old


Functions
---------

.. autoapisummary::

   functions_old.r2_keras
   functions_old.msenonzero


Module Contents
---------------

.. py:function:: r2_keras(y_true, y_pred)

   Calculate the R-squared metric for Keras models.

   Compute the coefficient of determination (R-squared) for regression tasks, ignoring zero values in the true labels.

   :param y_true: The true labels.
   :type y_true: `tensorflow.Tensor`
   :param y_pred: The predicted labels.
   :type y_pred: `tensorflow.Tensor`

   :returns: **r2** -- The R-squared value.
   :rtype: `tensorflow.Tensor`


.. py:function:: msenonzero(y_true, y_pred)

   Calculate the mean squared error ignoring zero values.

   Compute the MSE for regression tasks, ignoring zero values in the true labels.

   :param y_true: The true labels.
   :type y_true: `tensorflow.Tensor`
   :param y_pred: The predicted labels.
   :type y_pred: `tensorflow.Tensor`

   :returns: **mse** -- The mean squared error ignoring zeros.
   :rtype: `tensorflow.Tensor`